BibTeX:

@article{IJIRSTV4I12033,
     title={Switching Gain Adaptive Control Brushless DC Motor},
     author={Sabarinathan T and Gayathri S},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={4},
     number={12},
     pages={69--78},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV4I12033.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

Brushless DC (BLDC) is replacing DC motors in wide range of applications such as household appliances, automotive and aviation. These applications require a very robust, high power density and efficient motor for operation. BLDCs are commutated electronically unlike the DC motor. BLDCs are controlled using a microcontroller which powers a three phase power semiconductor bridge. This semiconductor bridge provides power to the stator windings based on the control algorithm. The motor is electronically commutated, and the control technique/ algorithm required for commutation can be achieved either by using a sensor or a sensor less approach. To achieve the desired level of performance the motor also can be controlled using a velocity feedback loop. Sensor less control techniques such as Direct Back Electromotive Force (Back- EMF), Indirect Back EMF Integration and Field Oriented Control (FOC) are studied and discussed. The speed vs. torque characteristics of several different sensor less control techniques of BLDCs were studied and compared to the speed vs torque curve of a separately excited DC motor.

Adaptive Control, Brushless DC Motors (Bldcms), Sliding-Mode Control (SMC), Switching-Gain Adaptation, Power Converter and Controller